interface SpeakHello {
	void speakHello();
}
class Chinese implements SpeakHello {
	public void speakHello() {
		System.out.println("中国人习惯问候语:你好，吃饭了吗? ");
	}
}
class English implements SpeakHello {
	public void speakHello() {
		System.out.println("英国人习惯问候语:你好，天气不错 ");
	}
}
class KindHello {
	public void lookHello(SpeakHello hello) {
		hello.speakHello();
	}
}
public class Example6_5 {
	public static void main(String args[]) {
		KindHello kindHello=new KindHello();
		kindHello.lookHello(new Chinese());
		kindHello.lookHello(new English());
	}
}
